Pete Wentz Gets Wild in Vegas

When the cats away, the mice will play! While Ashlee Simpson was posting new photos of Bronx to her Twitter, her hubby Pete Wentz was busy getting wild in Vegas.

Adding fuel to the breakup rumors, Pete partied hard with about 50 band members, dancers and pals, including Holly Madison, following a sold-out show at the Palms Casino Resort on April 5.

"Everybody was going absolutely crazy," an eyewitness tells Star. At one point he was "dancing on a pool table with the girls," the partygoer adds.

"People were even drunkenly playing makeshift Slip 'n' Slide with a mat and lubricant. And Pete was in great spirits. He was dancing and singing along to his band's own songs, grinding up against the dancers."

The couple has been denying breakup rumors for months. Sources close to the couple insist that Ashlee is tired of him partying and leaving her behind to care for their 4 month-old son. Although they both denied the claims, it looks like a photo is worth a thousand words!